! function(a, b) {
	function c() {
		var b = f.getBoundingClientRect().width;
		b / i > 540 && (b = 540 * i);
		var c = b / 10;
		f.style.fontSize = c + "px", k.rem = a.rem = c
	}
	var d, e = a.document,
		f = e.documentElement,
		g = e.querySelector('meta[name="viewport"]'),
		h = e.querySelector('meta[name="flexible"]'),
		i = 0,
		j = 0,
		k = b.flexible || (b.flexible = {});
	if (g) {
		console.warn("将根据已有的meta标签来设置缩放比例");
		var l = g.getAttribute("content").match(/initial\-scale=([\d\.]+)/);
		l && (j = parseFloat(l[1]), i = parseInt(1 / j))
	} else if (h) {
		var m = h.getAttribute("content");
		if (m) {
			var n = m.match(/initial\-dpr=([\d\.]+)/),
				o = m.match(/maximum\-dpr=([\d\.]+)/);
			n && (i = parseFloat(n[1]), j = parseFloat((1 / i).toFixed(2))), o && (i = parseFloat(o[1]), j = parseFloat((1 / i).toFixed(2)))
		}
	}
	if (!i && !j) {
		var p = a.navigator.userAgent,
			q = (!!p.match(/android/gi), !!p.match(/iphone/gi)),
			r = q && !!p.match(/OS 9_3/),
			s = a.devicePixelRatio;
		i = q && !r ? s >= 3 && (!i || i >= 3) ? 3 : s >= 2 && (!i || i >= 2) ? 2 : 1 : 1, j = 1 / i
	}
	if (f.setAttribute("data-dpr", i), !g)
		if (g = e.createElement("meta"), g.setAttribute("name", "viewport"), g.setAttribute("content", "initial-scale=" + j + ", maximum-scale=" + j + ", minimum-scale=" + j + ", user-scalable=no"), f.firstElementChild) f.firstElementChild.appendChild(g);
		else {
			var t = e.createElement("div");
			t.appendChild(g), e.write(t.innerHTML)
		}
	a.addEventListener("resize", function() {
		clearTimeout(d), d = setTimeout(c, 300)
	}, !1), a.addEventListener("pageshow", function(a) {
		a.persisted && (clearTimeout(d), d = setTimeout(c, 300))
	}, !1), "complete" === e.readyState ? e.body.style.fontSize = 12 * i + "px" : e.addEventListener("DOMContentLoaded", function() {
		e.body.style.fontSize = 12 * i + "px"
	}, !1), c(), k.dpr = a.dpr = i, k.refreshRem = c, k.rem2px = function(a) {
		var b = parseFloat(a) * this.rem;
		return "string" == typeof a && a.match(/rem$/) && (b += "px"), b
	}, k.px2rem = function(a) {
		var b = parseFloat(a) / this.rem;
		return "string" == typeof a && a.match(/px$/) && (b += "rem"), b
	}
}(window, window.lib || (window.lib = {}));